I'm sure we all know the situation where a server is full, but you really want to join. Would it be possible to have IDE re-check the server every, say, 5 seconds for an opening, and when available, automatically join? That's basically what I do manually: refresh, refresh, refresh until somebody leaves and then double-click as fast as I can.

The pop-up that says "Server is full. Connect anyway?" could, next to [ Ok ] and [ Cancel ], contain an option to enable auto-join or something that would start the abovementioned procedure. Something like this: